JPH108730A - Perpendicularity detecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out operation easily even by an unskilled worker by installing an XY-signal conversion circuit and a hydraulic-system controller to a device, in which perpendicularity is detected by laser beams and an error is corrected by a hydraulic cylinder, and controlling the XY-signal conversion circuit and the hydraulic-system controller by a personal computer. SOLUTION: A positional signal Sp from a perpendicularity detector 7 consisting of a laser beam oscillator 10, a photo detector 11, etc., mounted on a building material such as a guide pipe used when a permanent structural column is built is input to a personal computer 14. The input positional signal Sp is output to an XY-signal conversion circuit 15 in the personal computer 14, and coordinate signals SX1, SY1 in the XY directions are formed by using a coordinate transformation table at that time while a current value to coordinates is acquired, and output to a hydraulic-system controller 16. A hydraulic cylinder set up on the outer circumference of the lower section of a guide pipe is operated by the output signal, the guide pipe is moved in the horizontal direction, and perpendicularity is corrected. Perpendicularity is detected automatically by working the personal computer. Accordingly, perpendicularity can be detected in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical extension device used in an operation for vertically setting a guide pipe or the like used for erecting a straight pillar at a construction site (hereinafter referred to as vertical extension).

[0002]

2. Description of the Related Art Conventionally, for example, when constructing an underground part or an underground structure of a high-rise building by a reverse hitting method, an excavation pit is formed on the ground to form a straight pillar (a permanent steel pillar) with a predetermined accuracy. After being built vertically, the excavation pit is backfilled with earth and sand using a backhoe or the like. In the installation work of the straight pillar, the vertical pipe is inserted vertically into the excavation pit, and then the straight pillar is installed in the guide pipe. Next, as the construction progresses, the ground will be cut off, and the underground structure will be constructed by attaching the permanent steel beams that constitute the underground structure, etc., from the top to the bottom, to the above-mentioned straight columns. I am trying to do it. here,
An external configuration of a conventional vertical extension device used for performing the above-described vertical extension operation will be described with reference to FIGS. FIG. 4 is a plan view showing an external configuration of a conventional vertical extension device, and FIG. 5 is a partially cut-away cross-sectional view taken along line II ′ shown in FIG. In FIG. 4, reference numeral 1 denotes a cylindrical guide pipe. 2 and 3 are the inner peripheral surface 1a of the guide pipe 1
The rails are arranged so as to face each other along the longitudinal direction.

A hydraulic cylinder 4X is mounted on the outer peripheral surface 1b below the guide pipe 1 in the + X0 direction in the X0Y0 coordinate system shown in FIG. Oil is supplied via the hose 5. The ball seat 4Xa of the hydraulic cylinder 4X is moved to + X0 or -X0 shown in FIG.
, And the stroke is about 100 mm.

[0004] Reference numeral 6 denotes a stand pipe which is disposed to face the hydraulic cylinder 4X, and applies a reaction force to the hydraulic cylinder 4X. 4X ', 4Y and 4
Y 'is a hydraulic cylinder having the same configuration as the hydraulic cylinder 4X, and is attached to the outer peripheral surface 1b of the guide pipe 1 respectively. That is, the hydraulic cylinder 4X 'is X0
The hydraulic cylinder 4Y is mounted below the outer peripheral surface 1b in the + Y0 direction, and the hydraulic cylinder 4Y 'is mounted below the outer peripheral surface 1b in the -Y0 direction. ing. A stand pipe 6 is provided at a position facing the hydraulic cylinders 4X ', 4Y and 4Y', respectively.

[0005] Reference numeral 7 denotes a verticality detecting device, which includes a laser tube 8, a vertical maintainer 9, a laser oscillator 10 shown in FIG.
And a light receiver 11. The laser tube 8 is
The length in the longitudinal direction is substantially the same as the length in the longitudinal direction of the guide pipe 1, and has a cylindrical shape with the lower surface closed.
The laser tube 8 is attached to the inner peripheral surface 1a of the guide pipe 1 near the hydraulic cylinder 4Y shown in FIG. 4 so that its axis and the axis of the guide pipe 1 are parallel.

A vertical maintainer 9 shown in FIG. 5 is attached to an upper portion 8a of a laser tube 8, and always maintains a laser oscillator 10 mounted therein in a vertical posture. The laser oscillator 10 emits the laser light L toward the bottom surface 8 b of the laser tube 8. The laser beam L is always emitted in the vertical direction by the vertical maintainer 9 regardless of the attitude of the laser tube 8 (guide pipe 1).

The light receiver 11 receives the laser light L emitted from the laser oscillator 10 on its light receiving surface 11a.
Here, the configuration of the light receiving surface 11a of the light receiver 11 is shown in FIG. FIG. 6 is an enlarged sectional view taken along line TT ′ shown in FIG. In this figure, the light receiving surface 11a has X
A large number of light receiving elements 12, 12,... Arranged in a matrix along the 1Y1 coordinate system are provided.

FIG. 7 is a diagram showing an electrical configuration of the above-mentioned conventional vertical extension device. In FIG.
Indicates a position of a spot of the laser beam L formed on the light receiving surface 11a (hereinafter, referred to as a spot position) by a position signal S
Output as P. That is, the light receiver 11 generates a position signal SP from the position of the light receiving element 12 that has detected the laser light L among the light receiving elements 12, 12,... Shown in FIG.
Output this.

Reference numeral 13 denotes an I / F (interface) which converts the input position signal SP into a signal of a level that can be handled by the personal computer 14. The personal computer 14 displays the spot position of the laser beam L obtained from the input position signal SP on its display section 14a.

Next, the operation of the above-mentioned conventional vertical extension device will be described. In FIG. 4, the guide pipe 1 is
When the upper end of the guide pipe 1 is gripped by a gripping device (not shown), the lower end of the guide pipe 1
0 In the Y0 coordinate system, A1
It is assumed that the position is shifted by a predetermined amount in the direction. That is, the guide pipe 1 is in a non-vertical state.

In the above state, when the laser oscillator 10 shown in FIG. 7 is driven, a laser beam L is emitted in the vertical direction. At this time, the trajectory of the laser light L and the laser tube 8
Does not coincide with the guide line 1 because the guide pipe 1 is not in a vertical state. Then, the laser light L is applied to the laser tube 8.
The light propagates through the inside and is received on the light receiving surface 11 a of the light receiver 11. Now, it is assumed that the laser beam L has been received by the light receiving element 121 shown in black in FIG. That is, the spot position of the laser beam L exists in the third quadrant in the X1Y1 coordinate system shown in FIG.

As a result, a position signal SP corresponding to the spot position (the position of the light receiving element 121) is output from the light receiver 11 shown in FIG. 7 to the personal computer 14 via the I / F 13, and the personal computer 1
4 displays the spot position obtained from the position signal SP on the display unit 14a shown in FIG. In FIG. 8, the X1Y1 coordinate system corresponds to the X1Y1 coordinate system shown in FIG.
The point indicates the spot position, and the point O indicates the position of the emission port 10a of the laser oscillator 10 shown in FIG.

Thus, the operator looks at the screen of the display unit 14a where the points P1 and 0 do not match, and recognizes that the guide pipe 1 is not in the vertical state.
A hydraulic control device (not shown) is operated to bring the guide pipe 1 into a vertical state by matching the points. In particular,
First, the operator inputs a drive command to the hydraulic cylinder 4X shown in FIG. 4 from the personal computer 14 so as to position the point P1 shown in FIG. 8 on the Y1 axis. As a result, the ball seat 4Xa of the hydraulic cylinder 4X is shifted to +
It moves in the X0 direction, and the lower part of the guide pipe 1 moves in the −X0 direction due to the reaction force from the stand pipe 6. As a result, the point P1 shown in FIG. 8 moves in the + X1 direction. Then, when the point P1 is located on the Y1 axis, the operator inputs a stop command from the personal computer 14 to the hydraulic cylinder 4X.

Next, the operator sets the point P1 on the Y1 axis to O.
A drive command is input from the personal computer 14 to the hydraulic cylinder 4Y shown in FIG. As a result, the ball seat 4Ya of the hydraulic cylinder 4Y moves in the + Y0 direction shown in the figure, and the lower part of the guide pipe 1 moves in the -Y0 direction shown in the figure due to the reaction force from the stand pipe 6. As a result, the point P1 on the Y1 axis shown in FIG. 8 moves in the + Y1 direction shown in FIG. And the above P1
When the point is located at the point O, the operator moves the guide pipe 1
Is recognized in a vertical state, and a stop command is input from the personal computer 14 to the hydraulic cylinder 4Y.

Incidentally, in the operation of the above-described conventional vertically extending device, an example in which the vertically extending is completed by two operations has been described for the purpose of facilitating understanding, but in the actual operation, FIG. Hydraulic cylinder 4X, 4X ', 4Y
And vertical extension while repeating trial and error of expansion and contraction of 4Y '.

[0016]

However, in the conventional vertical dispensing apparatus, the operation of vertical dispensing requires skill, and therefore, there is a problem that the operation is difficult unless a specialized operator is used. However, if the user performs the operation, it takes a considerable amount of time to reach the vertical position, which hinders the operation. The present invention has been made under such a background, and it is an object of the present invention to provide a vertical erecting device that does not require the skill of an operator and can perform vertical erecting in a short time.

[0017]

According to the first aspect of the present invention, there is provided a building material to be provided in a vertical state, a verticality detecting means attached to the building material and detecting the verticality of the building material, A moving means attached to the lower part of the building material, for moving the lower part of the building material in a horizontal plane with respect to the upper part, based on a detection result of the verticality detecting means, so that the building material is in a vertical state. Control means for driving the moving means.

According to a second aspect of the present invention, in the vertical extension device according to the first aspect, the verticality detecting means is attached to an upper portion of the building material, and always keeps an object attached thereto in a vertical state. Vertical maintaining means, attached to the vertical maintaining means, a laser light oscillating means for irradiating the laser light toward the lower part of the building material, and disposed to face the laser light oscillating means, the lower part of the building material And a light receiving means for outputting, as a detection result, a spot position of the laser beam applied to itself.

According to a third aspect of the present invention, in the vertical extension device according to the first or second aspect, the moving means is a hydraulic cylinder.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an electrical configuration of a vertical extension device according to an embodiment of the present invention. In this figure, parts corresponding to the respective parts in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 1, an XY signal conversion circuit 15 and a hydraulic system control device 16 are newly provided. In the verticality detecting device 7 shown in FIG. 1, the illustration of the laser tube 8 (see FIG. 7) is omitted.

The XY signal conversion circuit 15 uses the coordinate conversion table H shown in FIG.
For example, an X1 coordinate signal SX1 and a Y1 coordinate signal SY1 corresponding to the X1 coordinate and the Y1 coordinate of the spot position P1 shown in FIG.

Here, the coordinate conversion table H will be described in detail. First, the X1Y1 coordinate system shown in FIG. 2 corresponds to the X1Y1 coordinate system shown in FIG. 8, that is, the spot position P1 on the coordinate conversion table H corresponds to the spot position P1 shown in FIG. The coordinate conversion table H is divided into areas AX, AY, BX, BY, CX, CY, and D. The area AX is an area set along the Y1 axis and having a width of ± 2 mm in the ± X1 direction from the Y1 axis. The areas BX, BX are areas set with a certain width in the ± X direction of the area AX.

The area AY is set along the X1 axis.
An area having a width of ± 2 mm in the ± Y1 direction from one axis. The areas BY and BY are areas set with a certain width in the ± Y1 direction of the area AY. Area CX is Area BX
Is set with a fixed width along the area CY
Is set with a constant width along the area BY. Areas D, D,... Are set in the first to fourth quadrants, respectively, are square areas, and areas CX, CY
It is set in the area surrounded by.

In the coordinate conversion table H, current values of 4 to 20 mA are assigned to the X1 axis and the Y1 axis as values indicating the X1 and Y1 coordinates, respectively, as shown in FIG. That is, on the X1 axis, 4 mA is allocated to the maximum X1 coordinate in the + X1 direction, 12 mA is allocated to the 0 coordinate, and 20 mA is allocated to the maximum X1 coordinate in the −X1 direction. On the other hand, on the Y1 axis, the maximum Y1 coordinate in the + Y1 direction is 4
mA and 0 mA are allocated to 12 mA, and 20 mA is allocated to the maximum Y1 coordinate in the -Y direction.

The XY signal conversion circuit 15 shown in FIG.
Are, for example, the X1 coordinate (15 mA) and the Y1 coordinate (1) of the spot position P1 shown in FIG. 2 obtained from the position signal SP.
X1 coordinate signal SX1 of 15 mA, each corresponding to 5 mA)
And a 15 mA Y1 coordinate signal SY1.

The hydraulic system controller 16 shown in FIG. 1 generates a control signal So for controlling the opening and closing of each solenoid valve in the hydraulic system described below based on the X1 coordinate signal SX1 and the Y1 coordinate signal SY1 input. Output. Details of the operation of the hydraulic system control device 16 will be described later.

FIG. 3 is a diagram showing a configuration of a hydraulic system of the vertical extension device according to the above-described embodiment. In this figure, parts corresponding to the respective parts in FIG. Omitted. In FIG. 3, reference numeral 20 denotes a hydraulic oil tank that stores oil 21 flowing through a hydraulic system. 2
Reference numeral 2 denotes a hydraulic pump, which is driven by the electric motor 23. 24 is an electromagnetic valve, 25 is a relief valve, and 26 is an electromagnetic valve. 27 is a high flow valve, 28 is a check valve, 29 is a low flow valve, and 30 is a check valve.

Reference numeral 31 denotes a pressure reducing valve for reducing the hydraulic pressure on the discharge side. 32 to 34 are solenoid valves provided corresponding to the hydraulic cylinder 4X. 35-37 are hydraulic cylinders 4X '
This is a solenoid valve provided corresponding to. 38 to 40 are solenoid valves provided corresponding to the hydraulic cylinder 4Y. 4
1 to 43 are solenoid valves provided corresponding to the hydraulic cylinder 4Y '. A return filter 44 purifies oil returning to the hydraulic oil tank 20.

Next, the operation of the vertical extension device according to one embodiment of the present invention will be described. In FIG.
Now, in a state where the upper end of the guide pipe 1 is gripped by a gripping device (not shown), when the operator issues a vertical start operation start command from the operation unit of the hydraulic system control device 16 shown in FIG. The device 16 first performs an initial operation.

That is, the hydraulic system control device 16
The operation command is issued to the electric motor 23 shown in FIG.
Solenoids 3, 36, 39 and 42 (left side in the figure)
And the control signals So to the solenoids 34, 37, 40 and 43, respectively. As a result, the hydraulic pump 22 is driven, and the electromagnetic valves 33, 36, 3
9 and 42 are driven rightward in FIG.
4, 37, 40 and 43 are driven to open.

As a result, the hydraulic pump 22 → the solenoid valve 26 →
High flow valve 27 → Check valve 28 → Solenoid valve 32 → Solenoid valve 3
The oil flows into the compression-side cylinder chamber of the hydraulic cylinder 4X via 3. As a result, the hydraulic cylinder 4X becomes -X0
Direction, while the oil in the extension side cylinder chamber of the hydraulic cylinder 4X is discharged from the solenoid valve 34 → the solenoid valve 33 → the return filter 4
4 and is returned to the hydraulic oil tank 20. Then, after a certain period of time, the hydraulic cylinder 4X is brought into a fully contracted state. On the other hand, hydraulic cylinders 4X ', 4Y and 4Y'
Is fully contracted through the same operation as the hydraulic cylinder 4X described above.

In the fully contracted state described above, the lower end of the guide pipe 1 shown in FIG. 4 is located at a position shifted by a predetermined amount in the A2 direction at an angle -θ2 with respect to the upper end in the X0Y0 coordinate system shown in FIG. It is assumed that That is, the guide pipe 1 is assumed to be in a non-vertical state. Further, the laser beam L emitted from the laser oscillator 10 shown in FIG. 1 is the first laser beam L in the X1Y1 coordinate system shown in FIG.
It is assumed that the light is received by the light receiving element 122 in the quadrant.

Therefore, from the light receiver 11 shown in FIG. 1, a position signal SP indicating the position of the light receiving element 122 shown in FIG.
Output to the personal computer 14 via F13. Thus, the spot position P2 shown in FIG. 8 is displayed on the display section 14a of the personal computer 14. This spot position P2 corresponds to the light receiving element 122 shown in FIG.
Corresponds to the position.

The personal computer 14 outputs the input position signal SP to the XY signal conversion circuit 15. Thus, the XY signal conversion circuit 15 converts the position signals SP to X1 using the coordinate conversion table H shown in FIG.
A coordinate signal SX1 and a Y1 coordinate signal SY1 are generated. That is, in FIG. 2, the XY signal conversion circuit 15 first recognizes the spot position P2 (first quadrant) from the input position signal SP, and then X1 and Y of this spot position P2.
A current value corresponding to one coordinate is obtained, and these are calculated as X1 coordinate signal S
The X1 and Y1 coordinate signals SY1 are output to the hydraulic system controller 16 shown in FIG. In this case, the X1 coordinate signal SX1 is 9 mA and the Y1 coordinate signal SY1 is 8 m, as shown in FIG.
A.

Next, the hydraulic system controller 16 receives the input X1 coordinate signal SX1 (9 mA) and Y1 coordinate signal SY1.
(8 mA), the spot position P2 (see FIG. 2) is X1Y
It recognizes that it is in the first quadrant of one coordinate system and is not located at the point O, that is, that the guide pipe 1 shown in FIG. 1 is not in a vertical state, and executes an automatic vertical operation described below. I do.

In the automatic vertical operation, first, the hydraulic system control device 16 sets the spot position P2 shown in FIG.
A command to extend the hydraulic cylinder 4X 'shown in FIG. 3 is issued to the hydraulic system shown in FIG. 3 to move the area from the area D of the quadrant to the area AX in the -X1 direction.

That is, the hydraulic system controller 16 outputs a control signal So to the solenoid of the solenoid valve 36 (the right side in the figure). As a result, the solenoid valve 36 is driven to the left in FIG.
The oil flows into the extension cylinder chamber of the hydraulic cylinder 4X ′ via the hydraulic pump 22 → the solenoid valve 26 → the high flow valve 27 → the check valve 28 → the solenoid valve 35 → the solenoid valve 36 → the solenoid valve 37. As a result, the hydraulic cylinder 4X ′ extends in the −Xo direction, while the oil in the compression-side cylinder chamber of the hydraulic cylinder 4X ′ flows through the solenoid valve 36 → the return filter 44,
It is returned to the hydraulic oil tank 20.

As a result, the spot position P2 shown in FIG. 2 moves in the -X1 direction. During this movement, the X1 coordinate signal SX1 output from the XY signal conversion circuit 15 is 9 m.
A, while the Y1 coordinate signal SY1 is 8 mA.
Remains constant. And the hydraulic system control device 16
When the spot position P2 moves to the area CX of the first quadrant, that is, when the X1 coordinate signal SX1 becomes larger than 10 mA, the control signal So is sent to the solenoid of the solenoid valve 26 shown in FIG.
Is output. As a result, the solenoid valve 26 is driven rightward in FIG.

As a result, the flow rate of the oil supplied to the extension cylinder chamber of the hydraulic cylinder 4X 'via the solenoid valve 35, the solenoid valve 36, and the solenoid valve 37 is reduced, and as a result, the extension speed of the hydraulic cylinder 4X' is reduced. Slows down.

Now, the spot position P2 shown in FIG.
Moves to the area AX, that is, the X1 coordinate signal SX1 becomes 1
When it is larger than 1.9 mA, the hydraulic system control device 16
The control signal S for the solenoid of the solenoid valve 36 shown in FIG.
Stop supplying o. Thereby, the hydraulic cylinder 4X '
Is held, and the spot position P2 shown in FIG.
Are located within the area AX.

Subsequently, the hydraulic system controller 16 sets the spot position P2 shown in FIG. 2 (in this case, located at the area AX).
Is issued to the hydraulic system shown in FIG. 3 to extend the hydraulic cylinder 4Y 'shown in FIG.

That is, the hydraulic system control device 16 controls the solenoid signal of the solenoid valve 26 (right side in the figure) by the control signal So.
Is stopped, and the control signal So is output to the solenoid (the right side in the figure) of the solenoid valve 42. This allows
The solenoid valve 26 is in the state shown in FIG.
To the high flow valve 27 side.

Also, the solenoid valve 42 is driven to the left in FIG.
High flow valve 27 → check valve 28 → solenoid valve 41 → solenoid valve 4
2 → The oil flows into the extension cylinder chamber of the hydraulic cylinder 4Y ′ via the solenoid valve 43. As a result, the hydraulic cylinder 4Y 'extends in the -Yo direction, while the hydraulic cylinder 4Y'
The oil in the compression side cylinder chamber of Y ′ is returned to the hydraulic oil tank 20 via the solenoid valve 42 → the return filter 44.

As a result, the spot position P2 shown in FIG.
(In this case, located in the area AX) moves in the −Y1 direction. During this movement, the Y1 coordinate signal SY1 output from the XY signal conversion circuit 15 gradually increases from 8 mA, while the X1 coordinate signal SX1 remains, for example, constant at 12 mA. Now, the spot position P2 has moved to the area CY, that is, the Y1 coordinate signal SY1 is 10 m.
When the value is larger than A, the hydraulic system control device 16 outputs a control signal So to the solenoid of the solenoid valve 26 shown in FIG.
As a result, the solenoid valve 26 is driven rightward in the figure, and switches from the high flow valve 27 to the low flow valve 29.

As a result, the flow rate of oil supplied to the extension cylinder chamber of the hydraulic cylinder 4Y via the solenoid valve 41 → the solenoid valve 42 → the solenoid valve 43 is reduced, and as a result, the extension speed of the hydraulic cylinder 4Y ′ is reduced. Slow down.

Now, the spot position P2 shown in FIG.
Moves to the area AY, that is, the Y1 coordinate signal SY1 becomes 1
When it is larger than 1.9 mA, the hydraulic system control device 16
The control signal S for the solenoid of the solenoid valve 42 shown in FIG.
Stop supplying o. Thereby, the hydraulic cylinder 4Y '
Is held. Further, the spot position P shown in FIG.
2 is located within a range where the area AX and the area AY overlap (hereinafter, referred to as a vertical extension range E), that is, near the point O. Therefore, the guide pipe 1 shown in FIG. 1 is in a vertical state.

Next, the hydraulic system control device 16 determines whether or not the spot position P2 shown in FIG. 2 exists within the vertical extension range E by using the X1 coordinate signal SX1 and the Y1 coordinate signal SY1.
Judge from the value of That is, now, the hydraulic system control device 1
6 indicates that both the X1 coordinate signal SX1 and the Y1 coordinate signal SY1 are 1
Since it is within the range of 2 ± 0.1 mA, the spot position P2
Exists in the vertical extension range E. In addition,
If the above determination result is “NO”, the hydraulic system control device 16 expands and contracts the hydraulic cylinder 4X ′ or (and) 4Y ′ in the same manner as the above-described operation so that the spot position P2 is within the vertical projection range. The hydraulic system shown in FIG.

Next, the hydraulic system controller 16 outputs a control signal So to each solenoid of the solenoid valves 32 and 38 and each solenoid of the solenoid valves 39 and 33 (right side in FIG. 3) shown in FIG. As a result, the solenoid valves 32 and 38 are driven to the right in the figure, and are switched from the high pressure side to the low pressure side, and the solenoid valves 39 and 33 are switched to the left side in the figure.

Thus, low-pressure oil flows into the extension cylinder chamber of the hydraulic cylinder 4X via the pressure reducing valve 31, the solenoid valve 32, the solenoid valve 33, and the solenoid valve 34. This allows
The hydraulic cylinder 4X extends in the + Xo direction, while the oil in the compression side cylinder chamber of the hydraulic cylinder 4X is returned to the hydraulic oil tank 20 via the solenoid valve 33 → the return filter 44. When the hydraulic cylinder 4 </ b> X is fully extended after a preset time elapses, the ball seat 4 </ b> Xa shown in FIG. The set time is set to be longer than the time required for the hydraulic cylinder 4X to change from the fully contracted state to the fully extended state.

On the other hand, the pressure reducing valve 31 shown in FIG.
→ solenoid valve 39 → hydraulic cylinder 4Y via solenoid valve 40
, Low-pressure oil flows into the extension side cylinder chamber, and the hydraulic cylinder 4Y extends in the + Yo direction. Then, when the hydraulic cylinder 4Y is fully extended after the set time described above, FIG.
Is pressed against the stand pipe 6. As a result, all of the ball seats 4Xa, 4Xa ', 4Ya and 4Ya' shown in FIG. 4 are brought into pressure contact with the stand pipe 6, so that the guide pipe 1 is
The posture is held by the stand pipe 6 via X ′, 4Y and 4Y ′.

Next, after the guide pipe 1 is held in the attitude, the hydraulic system control device 16 determines again whether or not the spot position P2 shown in FIG.
The X1 coordinate signals SX1 and Y1
Judge from the value of the coordinate signal SY1. Now, the spot position P2 is shifted out of the vertical projection range E by the above-described posture holding operation, and for example, the X1 coordinate signal SX1 is 11.5 mA, Y1
Assuming that the coordinate signal SY1 is 11.5 mA, the hydraulic system controller 16 sets the above determination result to “NO”,
The following vertical correction operation is performed. If the determination result is “YES”, the hydraulic system control device 16 does not perform the vertical correction operation.

First, the hydraulic system controller 16 keeps the solenoid valves 35 and 41 shown in FIG. 3 in the state shown in FIG.
The control signal So is output to each solenoid (the right side in the figure) of the solenoid valves 36 and 42, respectively. At the same time, the hydraulic system controller 16 outputs a control signal So to each solenoid of the solenoid valves 32 and 38,
The control signal So is output to each of the solenoids 9 (the right side in the figure).

Thus, by the above-described operation, high-pressure oil is supplied to the extension cylinder chambers of the hydraulic cylinders 4X 'and 4Y', and the hydraulic cylinder 4X 'extends in the -X' direction. 4Y 'extends in the -Y' direction. At the same time, low-pressure oil is supplied to each extension-side cylinder chamber of the hydraulic cylinders 4X and 4Y, and the hydraulic cylinder 4X extends in the + X direction, while the hydraulic cylinder 4Y extends in the + Y direction.

As a result, the hydraulic cylinder 4X 'is at a higher pressure than the hydraulic cylinder 4X opposed thereto, so that the lower part of the guide pipe 1 (see FIG. 4) relatively moves in the + X direction. . On the other hand, the hydraulic cylinder 4Y '
The lower portion of the guide pipe 1 relatively moves in the + Y direction because it is in a higher pressure state than the hydraulic cylinder 4Y opposed thereto.

As a result, the spot position P2 shown in FIG.
(In this case, the position of the X1 coordinate signal SX1: 11.5 mA and the position of the Y1 coordinate signal SY1: 11.5 mA)
Move towards. And, the spot position P2 is
When the hydraulic system control device 16 moves into the vertical extension area E, the supply of the control signal So to the solenoid valves 32 and 38 shown in FIG. 3 is stopped. Thereby, the solenoid valves 32 and 38 are switched to the state shown in FIG. Therefore, now
All of the hydraulic cylinders 4X, 4X ', 4Y and 4Y' are in a high pressure state. Thereby, as shown in FIG.
All of the ball seats 4Xa, 4Xa ′, 4Ya and 4Ya ′ are pressed against the stand pipe 6 at a high pressure, so that the guide pipe 1 is held by the stand pipe 6 with a predetermined holding force while being held vertically. .

[0056]

According to the present invention, the moving means is driven by the control means so that the building material is in the vertical state based on the detection result of the verticality detecting means. As a result, an excellent effect can be obtained that the vertical evacuation can be performed in a short time without requiring the skill of the operator.

[Brief description of the drawings]

FIG. 1 is a diagram showing an electrical configuration of a vertical extension device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a coordinate conversion table H used in the XY signal conversion circuit 15 shown in FIG.

FIG. 3 is a diagram showing a configuration of a hydraulic system of a vertical extension device according to an embodiment of the present invention.

FIG. 4 is a plan view showing an external configuration of a conventional vertical extension device.

5 is a partially cutaway sectional view taken along line II ′ shown in FIG. 4;

FIG. 6 is a sectional view taken along line T-T 'shown in FIG.

FIG. 7 is a diagram showing an electrical configuration of a conventional vertical extension device.

8 is a diagram showing an example of a display screen displayed on a display unit 14a of the personal computer 14 shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide pipe 4X, 4X ', 4Y, 4Y' Hydraulic cylinder 4Xa, 4Xa ', 4Ya, 4Ya' Ball seat 6 Stand pipe 7 Verticality detector 8 Laser tube 9 Vertical maintainer 10 Laser oscillator 11 Optical receiver 11a Light receiving surface 12 Light receiving element 14 Personal computer 15 XY signal conversion circuit 16 Hydraulic system controller H coordinate conversion table

Claims (3)

[Claims] 1. A building material to be provided in a vertical state; a verticality detecting means attached to the building material to detect the verticality of the building material; Moving means for moving the lower part relative to the upper part in the horizontal plane; and control means for driving the moving means such that the building material is in a vertical state based on the detection result of the verticality detecting means. A vertical extension device characterized by the above-mentioned. 2. The verticality detecting means is attached to an upper part of the building material, and maintains verticality of an object attached thereto at all times. The verticality detecting means is attached to the verticality maintaining means and emits a laser beam. A laser light oscillating means for irradiating toward the lower part of the building material, and disposed opposite to the laser light oscillating means, attached to the lower part of the building material, and detects a spot position of the laser light irradiated on itself as a detection result. The vertical projection device according to claim 1, further comprising: a light receiving unit that outputs the light. 3. The vertical extension device according to claim 1, wherein the moving means is a hydraulic cylinder.